Effect of parylene C coating on the antibiocorrosive and mechanical properties of different magnesium alloys

Effect of parylene C coating on the antibiocorrosive and mechanical properties of different... Article history: In this paper, parylene C coating with the thickness of 2 m was deposited on different magnesium Received 24 March 2017 alloy substrates (AZ31, WE43 and AZ91). The structure and phase composition of parylene C coat- Received in revised form 29 July 2017 ing was analysed by Fourier transformed infrared (FTIR) spectroscopy and X-ray diffraction (XRD). In Accepted 8 August 2017 addition, extensive surface characterization was done using atomic force microscopy. The corrosion per- Available online 12 August 2017 formance of polymer-coated magnesium alloys was investigated by electrochemical measurements in Hanks’ balanced salts solution that simulates bodily fluids at 37 ± 0.5 C. The depth-dependent mechani- Keywords: cal properties including Young’s modulus and nanohardness of parylene C films were investigated using Biodegradable alloy nanoindentation technique. The effect of the penetration depth on the properties on nano- and microscale AZ31 level have been described in detail. The percentage of elastic recovery was used to characterize the elastic WE43 and AZ91 magnesium alloys properties of the polymeric coatings. The results of XRD showed (020) preferred orientation of the mon- Parylene C coating Corrosion oclinic unit cell of the alpha phase of parylene C. The parylene C revealed a semicrystalline http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Applied Surface Science Elsevier

Effect of parylene C coating on the antibiocorrosive and mechanical properties of different magnesium alloys

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Publisher
Elsevier
Copyright
Copyright © 2017 Elsevier B.V.
ISSN
0169-4332
eISSN
1873-5584
D.O.I.
10.1016/j.apsusc.2017.08.066
Publisher site
See Article on Publisher Site

Abstract

Article history: In this paper, parylene C coating with the thickness of 2 m was deposited on different magnesium Received 24 March 2017 alloy substrates (AZ31, WE43 and AZ91). The structure and phase composition of parylene C coat- Received in revised form 29 July 2017 ing was analysed by Fourier transformed infrared (FTIR) spectroscopy and X-ray diffraction (XRD). In Accepted 8 August 2017 addition, extensive surface characterization was done using atomic force microscopy. The corrosion per- Available online 12 August 2017 formance of polymer-coated magnesium alloys was investigated by electrochemical measurements in Hanks’ balanced salts solution that simulates bodily fluids at 37 ± 0.5 C. The depth-dependent mechani- Keywords: cal properties including Young’s modulus and nanohardness of parylene C films were investigated using Biodegradable alloy nanoindentation technique. The effect of the penetration depth on the properties on nano- and microscale AZ31 level have been described in detail. The percentage of elastic recovery was used to characterize the elastic WE43 and AZ91 magnesium alloys properties of the polymeric coatings. The results of XRD showed (020) preferred orientation of the mon- Parylene C coating Corrosion oclinic unit cell of the alpha phase of parylene C. The parylene C revealed a semicrystalline

Journal

Applied Surface ScienceElsevier

Published: Jan 1, 2018

References

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